Watertight gates to a person. I’m sure people said there is no such thing, they all leak, but you wanna minimize the loss, obviously. And that was very important in us dividing tanks with watertight gates and you know, there were times we would have to drain one tank but didn’t want the other one to flow into it. So the gates leaked, but it was nominal and it was, you know, that kind of thing. I think that really was crucial to the early days of the Oceanarium.